Underground pump for deep wells



R. C. MASON UNDERGROUND PUMP FOR DEEP WELLS l Filed April 27, 1,925

Get. 7, 1930.

Patented Oct. 7A, 11930 aleman c. meer, or TULSA, OKLAHOMA, Assrenoa ro Enum JOYCE, or VILLE, xANsAs e UNDEBGROUD PUMP FOR DEEP `TIEIJLS Application inea April av, niet.v serial no. 20,090.

This linvention relates to pumpsand pump operating mechanisms such as are used in deep wells, and the invention illustrated is particularly applicable for use in connection with oil wells.

'The primary object of the invention is to provide a simple, eicient form of h draulically operated pump and to this en the in\ vention consists in certain parts and combinations of parts, all of which will be specifically described hereinafter, reference being had to the accompanying drawings, which Fig. l is an elevational view of a pumping mechanism constructed in accordance with my invention, parts being shown in section.

Fig. 2 is a vertical, longitudinal, sectional view through the pump motor located below the ground, and

Flg. 3 is an enlarged, sectional view through the upper part of the pump motor shown in Fig.

In carrying out the invention I provide a hydraulic motor havingxa cylinder 1 with a reciprocatory piston 2 t erein. The cylinder 26 1 has two inlets 3 and 4, which are supplied with oil from an oil pumpI 5 through the medium of the pipes 6 and 6. The oil pump 5 has a reversing mechanism controlled by a reciprocatory rod 7, which will be actuated by the arm 8 on the piston rod 9 so that oil will be fed first to one end of the cylinder and then to the other. v

I prefer to use a high grade oil as the motive fluid for the motor just described.

On the end of the iston rod 9 is a. pump piston 10 in a cylin er 11. The pump' piston 10 and the'cylinder 11 are of diameters less than the piston 2 and the cylinder 1 of the motor; therefore, the cylinder 11 will be a high pressure cylinder as compared with the cylinder 1. I am thereby enabled to intensifythe power delivered through the fluid 12 in the cylinder 11. The cylinder 11 is connected to a pipe 13 which discharges into the top port 14 of a pum motor barrel 15. The port 14 runs longitu 'nallyof the barrel`15 and it constitutes a concentric, annular passageway formed by a motor cylinder 16 carried by the heads 17 and 18 of the motor barrel. The ends of the motor cylinder 16 have stuffing boxes 19 and 20 in which hollow rods 21 and 22 slide, the rods being connected by a hollow piston 23 adapted to be raised when fluid from the port 14 enters the cylinder 16 through the openings 24. The lower end of the rod '22 is connected to a sucker rod 25 of the pump 26 `so that Huid will be raised when the cylinder 12 passing through pi e 13, annular port 14 and into the cylindlr 16, raises the piston 23. When such fluid is raised, it will pass through the openings 27 in the rod 22, passing through the hollow rod, throu h the piston 23, through the' rod 21 into t e upper part of the motor barrel and out through pipe 28 to a suitable receptacle or to the pipe line. v

The motor in the ground is usually sunk about 37%, (counting from the top) of the distance between the top of the ground and the bottom of the well, this bein recoinmended as the best mean average or fluids of different specific gravities. l This is only illustrative, however, as I do not wish to be limited to placing the pump motor at any particular location under ground.

uid from Attention is called to the fact that there will be leakage from the pipe 13'so I `have provided a reservoir 29, to hold oil which will communicatewith the pipe 13 and supply any deciencies in the line. Any oil which seeps past the piston 23, that is, above it, will flow out through the side port 30.

The motor consisting of the cylinder 1 and piston 2 will be reversed by the arm'8 as 4the rod 9 reciprocates to and fro because the arm will strike the projections 31 and 32 on the rod 7 that is, when the rod 9 moves Ain one direction, the arm 8 will strike the projection 31 and when it moves in the opposite direction, it will strike the projection 32.

When it is desired to remove the mechanism from the well, it will be necessary to drain the oil from the pipes 13 and 28. In order to accomplish -this I have provided a cross port- 33 inthe head 5 which passes through the port 14 and through the outlet port-34 at the top of the piston cylinder 16. Therefore, by unscrewing the pipe 13 until ioo ving a lower the lower end thereof registers with the e 13 will drain since the port 34 with the cross port 33, the oil in pi out back into the well an 33 will also communicate port 4well,the oil in pipe 28 will drain back into the well. Then the mechanism can be convenientlyraisedor pulled from the well.

The threaded ,connection between the lower end of the pipe 13 and the head 15 is a left hand screw thread connection.

It will be apparent from` the foregoing that the device is simple i construction,

be eii'ective in movingthe piston 10 to cause the iuid 12 to liow through pipe 13 into the motor cylinder 16 to raise the piston 23 and thereby lift the oil, and that when the power stroke of the piston 2 moves in areverse direction, the hydraulic pressure against the piston 23 will be relieved so that fluid, working barrell of the pump, sucker rods, etc., will be effective in lowerlng the piston 23 to a position so that it can' be raised on the next power stroke of the piston 2. l While I prefer to use high grade oil for the cylinder 1 and piston 2, a very low grade of oil .ma be used in' cylinder 11, pipe 1 3 and cylin er 16; in fact, I recommend ordinary raw crude oil from which the sand and similar impurities are removed as a proper medium for transmitting the power stroke of the piston 10 to the piston 23.

What I claim and desire to secure by Letters-Patent is: v

`1. Apparatus of the character described includin an underground pump, tublng leading om the pump, a housing barrel havan upper head provided withl separate outlet and motive fluid supply channels, a cylinder within said barrel having 'an intake port at its lower end in communication with said motive'fiuid channel, a piston in said cylinder, a lower hollow rod section operatively connecting the piston with the underground pump and, communicating 'with said tubing, an

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er hollow rod'section providing communicatlon through the piston from the lower rod section to the said outlet channel, and means for intermittently charging said cylinder through said supply channel.

. 2. In combination with an underground pump and its tubing and rod, said pump delivering into the tubing, a vertical bairel having end closures, a cylinder in the barrel having end closures, a piston in the cylinder having a hollow rod connected with the pump rod and communicating with the tubing, a fluid outlet conduit communicating with the hollow piston rod, a power fluid supply conduit communicating with the lower portion of said cylinder, and means for intermittently supplying Huid under pressure through the supply conduit.

head mounted on the tubing and 3. In combination with a cylinder, a tubing suspended from the cylinder, a pump including a piston suspended from the tubing, .said pump delivering into the tubing, a piston in the cylinder having a hollow red communicating with the tubing, a pump rod connected with the pump pistonand suspended from and operable by the hollow rod, a fluid outlet conduit in communication with the hollowrod, a power fluid supply conduit in communication with the lower portion ofthe cylinder, and means for intermittently supplying tluid through the supply conduit whereby the piston is lifted hydraulically and municating with the pump tubing at its lower t end, the piston rod connected with the ump. rod` to operate and be operated there y, a

fluid outlet conduit in communication with the upper end ofthe hollow piston rod, and a supply conduit connecting the pulsator with the lower end ofthe' motor cylinder.

5. In combination with an underground pump and a iuid pulsator, a motor between the pump and. pulsator including a barrel having end heads, tubing suspended from the lower barrel head and suspending the pump, a cylinder within the barrel, closed at its ends and having connection'with the barrel at itsl lower end, a piston in said cylinder, a hollow .rod connected with the piston and extended into and communicating with said tubing to provide outlet froml the tubing through the cylinder, and connected with the pump rod to operate and be operated thereby, an outlet conduit communicating with said lhollow rod, and a power iuid conduit connecting the pulsator with said barrel.

6. In combination with an underground pump and a fluid pulsator, tubing for the pump and a pump rod in the tubing, a head on the tubing, concentric, spaced barreland cylinder ymembers rising from said head, the

cylinder member communicating at its lower end with the barrel member, an upper head for the cylinder, a channelled head closing the upper end of the barrel, a piston in said y cylinder, a hollow rod connected with the piston and extended through the cylinder heads, the lower portion of said rod communicating with the tubing and connected with the pump rod, an outlet conduit communicating with the upper portion of the hollow rod thngh' one of the barrel head closures, and a power iiuid conduit connecting the barrel chamber with the pulsator through another barrel head channel.

7. In combination with an underground l pump, tubing for the pump and a pump rod 1n the tubing, a head on the tubing, concentric spaced barrel and cylinder members rising from saidhead, the cylinder member communicating at its lower end with the barrelmember, an upper head for the cylinder, a head closing the upper end of the barrel having connecting well fluid outlet and motive fluid inlet channels, a piston in said cylinder, a hollow rod connected with said piston and extending through said cylinder heads to communication with said tubing and with said outlet channel, the lower portion of said hollow rod being operatively connected with the pump rod, an outlet conduit in communi cation with the outlet channel in the barrel head, and a supply conduit communicating with the inlet channel in said barrel head and normally closing communication between the inlet and outlet channels.

8.l In combination with a cylinder, tubing suspended from the cylinder, a pump suspended from the tubing and deliveringinto said tubing, a piston in the cylinder having a hollow rod communicating with the tubing, a` pump rod suspended from and operable by the hollow rod, a iiuid outlet conduit in communication with the hollow rod, a power fluid supply conduit in communication with the lower portion of the cylinder, means venting the upper portion of 'the cylinder to atmosphere, and means for intermittently supplying fluid through the supply conduit Vwhereby the piston is lifted hydraulically and returned by weight ofthe pump rod and the static head acting on the pump. In testimony whereof I aiix my signature.

RICHARD C. MASON. 

